I am currently working on a physics experiment where I count particles. I have looked at and used a bit of code from the following sources:
Cell counting from an image file and
Count Elements in Image
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Is it possible to remove static objects/pixels from a sequence of images?
Lets say I have a black square in the middle of my white picture (white background) and a black circle is orbiting around it. ...

Is there a Mathematica equivalent of Trainable WEKA Segmentation as implemented in Fiji, the image processing software? A Google search did not return any relevant links.
I attach the original image ...

I am trying to obtain 2D FFT of an image. From the 2D FFT, I wish to calculate the amplitude of the FFT averaged over a circle vs the distance in pixels by varying the radius of the pixels which is ...

EDIT: Solutions by @Alexey Popkov and @Vitaliy Kaurov are very intuitive and both can be used to find a solution for the task.
I have a slit of 15-18 microns by 1 mm projected with magnified 4X onto ...

I want to recover the data from an image of a plot by finding the points on the plot and fit them to a known model. I implemented the code for the cases where there's a single curve on the image, but ...

There is an interesting algorithm called contrast enhanced adaptive histogram equalization that does histogram equalization on small segments of an image (and then pastes them back together). I know ...

I have a set of lines I pulled from an image that make a closed loop, pretend it's a unit square for reference. Is there a way to use such an arbitrary region for solving PDEs, and is there a way to ...

I'm currently trying to take a 2d profile generated in SolidWorks and use mathematica to analyze it. I need to pull lines that represent the boundaries of the shape from an image of the shape. . My ...

Imagine that I have a real life video, with all the artefacts coming from real life, and also from video compression, etc, and that I can edit this video, with filters and cropping, in such a way that ...

I am looking for an easy method to count individual particles in a microscopic image. It is quite difficult for Mathematica to detect them, because they are touching each other.
I am quite a beginner ...

I am new to image processing, and I was hoping someone might set me in the right direction. I am trying to create a simple toolkit for personal use for digitizing scanned book images into a database. ...

I would like to find all stationary points of a data set of arbitrary rank. MinDetect and MaxDetect are great for finding minima and maxima but I can't find a good way of finding the saddle points.
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I want to reconstruct paths in images and have already implemented a working method in Mathematica. On the left side you can see an image with interrupted paths and on the right side the reconstructed ...

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